1210421121142 has 16 divisors (see below), whose sum is σ = 1822520254464. Its totient is φ = 602914833000.

The previous prime is 1210421121137. The next prime is 1210421121167. The reversal of 1210421121142 is 2411211240121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5358667 + ... + 5579977.

It is an arithmetic number, because the mean of its divisors is an integer number (113907515904).

Almost surely, 2^{1210421121142} is an apocalyptic number.

1210421121142 is a deficient number, since it is larger than the sum of its proper divisors (612099133322).

1210421121142 is a wasteful number, since it uses less digits than its factorization.

1210421121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231675.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1210421121142 its reverse (2411211240121), we get a palindrome (3621632361263).

The spelling of 1210421121142 in words is "one trillion, two hundred ten billion, four hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-two".